Are there nonstop flights from Taipei (TPE) to Haikou (HAK)?

Yes. China Airlines fly this route. Flight time is about 1h 58m.

What is the fastest connection from Taipei (TPE) to Haikou (HAK)?

via Hong Kong ≈ 2h 28m, via Macau ≈ 2h 29m, via Xiamen ≈ 2h 29m (estimated flying time, excluding layovers).

from 10,000 ANA miles, from 12,000 JAL miles (economy, one way, based on the published award charts).

Taiwan Taoyuan International Airport (TPE) to Haikou Meilan International Airport (HAK)・1,245 km

Nonstop flights available (1 airline). Flight time about 1h 58m. Nonstop return flights also operate.

With milesANA 10,000 miles+ (via SZX)JAL 12,000 miles+ (via HKG)Economy, one way, estimate. Tap a connection for miles by cabin.

15 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.